Callaway Men's Golf Double Fine-Line Stripe With Ribbed Collar Shortsleeve Polo 92% Polyester\8% Spandex Imported Callaway Tour Logo On Left Sleeve Opti-Dri, Transfers moisture away from the body to help in evaporation Opti-Shield 50, Creates a layer of protection from the sun's harmful rays Opti-Genic, keeps the garment fresh over time, reduces odor and helps maintain durability Opti-Stretch, fabrics feature interwoven layers of Spandex and Lycra to ensure maximum rage of motion so the garment moves with the golf swing